Electric operating mechanism for circuit breaker

Abstract

The invention discloses an electric operating mechanism for a circuit breaker. The mechanism comprises a shell, a motor arranged in the shell, a gear transmission assembly connected with the motor, a driving shaft connected with the gear transmission assembly and provided with an operation hole, a cam assembly connected with the driving shaft, a sliding block assembly connected with the cam assembly and capable of doing reciprocating motion, a sliding plate arranged in a sliding mode and capable of covering the operation hole, a first microswitch used for switching on or switching off remote control, a circuit board used for receiving and sending out a control signal, a pressing assembly used for pressing a circuit breaker test button, a safety lock assembly which can be matched with the first microswitch in an abutting or separating mode, and the safety lock assembly comprises a lock cylinder which is rotatably arranged and a lock sleeve which is matched with the lock cylinder in a linkage mode. According to the invention, after manual opening or remote opening, various limiting operations can be carried out by rotating the safety lock, so that the closing operation of the circuit breaker is effectively prevented, and the safety of maintainers is better guaranteed.

Description

technical field [0001] The invention relates to the technical field of circuit breaker automatic control, in particular to an electric operating mechanism for a circuit breaker. Background technique [0002] A circuit breaker is a switching device used to turn on or off a circuit, and the opening and closing operations of the circuit breaker can be manually controlled locally, or remotely controlled by an electric operating mechanism, thus realizing automatic control. When the circuit breaker is overhauled, it is necessary to open the circuit breaker. At this time, the electric operating mechanism can be used for manual opening locally or remotely. After opening, the safety lock is usually turned to disconnect the motor through the micro switch, thereby disconnecting the remote control, thus preventing the remote end from performing closing operations. However, the existing safety lock only disconnects the remote control by cooperating with the micro switch. After turning t...

AI Technical Summary

Problems solved by technology

However, the existing safety lock only disconnects the remote control by cooperating with the micro switch. After turning the safety lock, it does not have other operations to limit the closing of the circuit breaker, so there will still be accidental closing of the circuit breaker. Hidden dangers, which may lead to safety accidents for maintenance personnel and cause irreparable losses

Images